18717237

素因数分解:

$3^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3001}}^1$

素因数の和:3031

約数の個数: 40

約数和(自身を含む): 34871232

約数和(自身を除く): 16153995

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 81, 99, 189, 231, 297, 567, 693, 891, 2079, 3001, 6237, 9003, 21007, 27009, 33011, 63021, 81027, 99033, 189063, 231077, 243081, 297099, 567189, 693231, 891297, 1701567, 2079693, 2673891, 6239079, 18717237]

約数ペア:

[(1, 18717237), (3, 6239079), (7, 2673891), (9, 2079693), (11, 1701567), (21, 891297), (27, 693231), (33, 567189), (63, 297099), (77, 243081), (81, 231077), (99, 189063), (189, 99033), (231, 81027), (297, 63021), (567, 33011), (693, 27009), (891, 21007), (2079, 9003), (3001, 6237)]